It is said that wool product in Australia is of high quality.A. /; /B. the; /C. the; aD.

问题补充：

It is said that wool product in Australia is of high quality.

A. /; /

B. the; /

C. the; a

D. the; the

答案：

A. /; /

(答案→)B. the; /

C. the; a

D. the; the

解析：句意：据说澳大利亚的羊毛是质量非常高的。The+可数名词表示一类；quality质量，不可数名词，前不用加冠词，故选B。